Symptom
Cause
Remedy
Pump leaking
Forces in pipeline too high (pump unit
under strain)
•
Change (support pipes, use
compensator’s, etc.)
•
Is foundation plate/frame proper-
ly cast in place?
Sealing insufficient
•
Tighten screws
•
Replace sealing
Leakage rate at shaft sealing too
high
Stuffing box not straight
Tighten evenly
Lines and roughness at shaft
Replace parts
Unsuitable packing material
Use suitable material (check shaft or
shaft sleeve for damage beforehand
Deposits on mechanical seal
If necessary provide additional rinsing
or quench
Impeller out of balance
•
Remove blocks/deposits
•
Replace impeller if broken or un-
evenly worn
•
Check shafts to ensure that they
are running true
Coupling not aligned
Align pump unit better
Forces in pipeline too high (pump unit
under strain)
•
Change (support pipes, use
compensator’s, etc.)
•
Is foundation plate/frame proper-
ly cast in place?
8.1 Operation troubleshooting
48
Model ICP, ICPI, ICPH, ICPIH Installation, Operation and Maintenance Instruction